Lithographer&#39;s press



April 1 1924. 1,488,821

s. F. KJELL l LITHOGRAPHERS PRESS Filed .Nov.. 28, 1922 2 Sheets-Sheet 1 I'Lgl. El j J9 lo Invenzion- Zay April 1 1924. 1,488,821

s. F. KJELL v .L-IfrHoGRAPHER' s PRESS FME.

SIMON FABIAN KJELL, OF IVIALDEN, MASSACHUSETTS.

L'lHOG-ELAPHERS PRESS.

Application filed November 28, 1922. Serial 310,603,843.

Middlesex and State of liassachusetts, havey invented certain new and useful Improvements in' Lithographers Fresses, of which the following is a specification.

rFhis invention relates to presses and particularly to presses for use by lithographers, and the object of the invention is the production of an inexpensive device ofthis'charactor which may be used in the home to print a limited number of lithographs or artists proofs.

Another object of the invention is the production of a device of this character which may be utilized as a `table by an artist while producing his work upon 'the stone from which the lithographs are ito be subsequently printed. f

The invention consists of a table having superimposed thereon a framework provided with a sheet backcr and a movable member adapted to be moved over the surface of the backer to produce an impression from the stone upon the sheet of material superimposed thereon.

The invention further consists of certain novel features of construction and arrangement of parts which will be understood readily by reference to the description of the drawings and to the claims to be hereinafter give-n.

For the purposes of illustrating the invention, one preferred form thereof is shown in the drawings, this form having been found to give satisfactory and reliable results, although it is to be understood that the various instrumentalities of which the invention consists'can be variously arranged and organized, and that the invention is not limited to the precise arrangement and organization of the instrumentalities as herein shown and described, except as required by the scope of the appended claims.

Of the drawings: I

F igurel represents a plan of a machine embodying the principles of the present invention.

Figure 2 represents a vertical section of same on line 2, 2 on Fig. 1. l

Figure 3 represents an end elevation of the same.

h Figure t representsk a vertical section on line el, 4C on Fig. 2.

g Figure 5 represents a vertical section on linel, 5 on Fig. 2, and

Figure 6 represents a sectional detail on line 6, 6 on Fig. 2.

Similar characters indicate like parts .throughout the several figuresI of the drawings. s

In the drawings, 10 is a bed supported upon the legs 11. This bed 10 has a slot 12 1n one end thereof in which is positioned the lhead 13 of a threaded member 14 eX- te'nding upwardly from 'the bed 10 and having threaded' thereto a'shouldered nut 15.

Between the shoulders of the nut 15 is disposed a cross bar 16 of a frame 17 adapted to be raised and lowered relatively to the upper face of the bed 10 when the nut 15 is rotatedabout the aXis of the perpendicular threaded member 14:.

` At the rear of the bed 10 is secured an upwardly extending plate 18 against which the rear side of the frame 17 contacts, this plate preventing the 'rotation of the frame 17 about the axis ofthe member 14 when the frame 17 is being raised'or lowered.

The bed 1() is adapted to support a lithographic stone 19, and above this stone 19 is a framework 2O hinged at 21 to the left or inner end of the frame 17. This framework 2O may be moved about the axis of the pins of the hinges 2lr t'o secure access to the stone 19. lNhen the framework 2O is moved from contact with the stone 19,it is adapted to rest upon the support 22 secured to one end of the frame 17.

Secured to the under part of the framework is a hacker plate 23 preferably formed of fiexible metal and normally free from Contact with the stone 19 or a sheet of paper superimposed thereon.

@ne endy of the backer 23 is clamped at 211 and the other end has a spring 25 secured thereto, the opposite end of which is secured to the bracket 26, depending from the framework 20.

Between the side bars of the framework 20 is a carriage 27 adapted to be moved lengthwise of the framework 2O by means of cords or wires 28 which at one end are secured to the carriage, while the opposite ends thereof are secured to the rotatable drum 29 mounted upon a shaft 30 revoluits normal position as shown in y its normal position when bly mounted in bearings in the frame 17. rlhis shaft 30 is adapted to be rotated by means ot a crank 31, and may also be moved endwise.

Pinned or otherwise secured. to the shaft 30 is a clutch member 32 adapted to engage with a coacting clutch member 33 on the revoluble drum 2Q, said druni` normally being retained in position indicated inllig. 1 by means oi the spring 3e as shown in said Fig. 1. When in this position the clutch members 32 and 33 are disengaged.

`When it is desired to more the c 2.7 to the right or Figs. 1 and the operator forces the shaft 30 to the rear until the clutch members 32 and 33 engage, then by rotating the crank 31, the carriage is moi lengthwise oit the framework 20. 1s as the operator releases the crank 31, the spring 34 will act to return the shaiL 30 to the drawings.

The carriage 2'? has a slot therein in which is disposed a wiper member 35, the .lower end of which is tapered ith the edge thereof contacting with the upper face et the flexible plate 23. Upwarr movement oi thc wiper member 35 is prevented by means ot the top plate 36 and shoulders on said wiper 35 bearing against the under o' the carriage 27, and said wiper member is secured in position in its slot by means ot the set screw 3?. l

ln the iree end of the framework 2O is mounted a threaded member 38, the lower end of which has a hook 39 formed integral therewith.

lotatably mounted in the free end of the framework 20 and prevented from end movement, is an adjusting nut 10 threaded to the member 38. By rotating this nut d0, the position of the hook 39 may be adjusted relatively to the framework 20.

To the under iace of the left hand end ot the bed 10 is a` slotted plate d1, in a hole through which is disposed the upper end ot a rod 4t2, the lower endv ot said rod i2 being positioned in a slot in the plate secured to a cross bar iii between the legs 11, 11 at the left of the machine.

rlhe upper end of the rod 4:2 has secured thereto a slotted member ei5 through the slot ot which the projection d@ on the hook 39 is adapted to extend. To the cross bar L14 is pivotally mountel at 47 lever 4:8, having an extension 49 on the other side of said pivot carrying a counter weight 50. rlhis weight 50 is sufficient to normally retain the lever i3 in the position indicated in Fig. 3 of the drawing-s, and to return it to the lever has been moved in the direction of the arrow a on Fig. 3 of the drawings.

The lever 4:8 has a pin 51 mounted therein eccentrica-ily to the pivot 47, this pin 51 extending through a slot 52 in the lower end or the rod e2. Between the lett end ot the bed 1() and the rod i2 is one end ot a lever pivoted at 5d to said bed 1G and normally held free trom contact with the rod by means of spring- 55 positioned in a. hole in the end or the bed 10.

lWhen it is desired to print from the lithographie stone 19, the operator presses against the end of the lever 53, torcing the opposite end thereof against the rod Li2 and mowing laterally in the slot oit the plate suhciently to disengage the slotted member i5 rtrom the projection 16 on the hook 39. llfhen the hook 39 is thus disconnected 'from the member d5, the framework 2O may be moved about the hinges 21 onto the support 22.

A sheet et paper is then placed upon the lithographie stone 19 and the Jramework 20 is then returned to its normal position as indicated in Figs. 1 and 2 ot the drawings.

`ln the downward movement of the framework 2G, the curved portion of the projection e6 will come into Contact with the curved upper end 57 of. the member e5, forcing said member outwardly a. sutiicicnt distance to permit the projection d6 to again enter the slot in the member i5.

TWhen the projection i6 has come to a point opposite to the slot in the member 11:5, the spring 58 connected at one end to a. pin 59 in the bed 10 and with the opposite end thereof connected to the plate 41, through which the rod i2 extends, will act to move said rod i2 toward the end of the bed 10 and permit the projection 46 to enter the slot in the member 45.

rlhe operator then grasps the lever 48 and moves it in the direction of the arrow e on 3 ot the drawings, thereby mor-l ing thD tree end ot the framework 20 downwardljv a distance suilicient to give the proper impression upon the becker 23 aoove the sheet ot material to be printed upon.

lt is obvious that this framework 20 when in position to print must be parallel with the upper tace oi the stone 19, and the revoluble nuts 15 and d() may be adjusted so that, regardless of the thickness of the stone and the impression desired, the trame 17 and trameworl 2O may always be adjusted in the pro-pen' position parallel to the stone 19.

When these adjustments have been made by means of the nuts 15 and d0, the operator grasps the handle of the crank 31 and rotates trie same clockwise, drawing the carriage 27 toward the right of the machine, the wiper member carried thereby forcing a portion of the backer 23 into contact with the sheet of paper being printed upon. v

As the wiper member 35 is drawn across the backer 23, only that portion of the Maasai hacker opposite the wiper 35 will be forced into contact with the sheet of paper or other material, the remaining portions of the backer being free from contact with said sheet.

When the wiper member 35 has reached the right hand end of the framework 20, said framework 2O will again-be disengaged from the slotted member 45 and moved about its hinges onto the support Q2, permitting the printed sheet to be removed from the stone. A new sheet is then superimposed upon the stone, the framework 2O is returned to its normal position and locked, and then the carriage is returned toits normal position at the left of the framework 20, preparatory to another operation.

At one end of the machine there is preferably secured a receptacle 58 in which the sheets to be printed upon may be retained.

lVhen the artist desires to work upon the stone 19 supported by the bed 10, the head 13 may be removed from the slot 12, thereby removing the frame 17 and the framework 20, giving the artist ample room to work upon the stone. When this work had been finished, the frame 17 and framework 2O may be returned to their normal position as indicated in the drawings and the printing resumed.

It is believed that the operation and many advantages of the invention -will be understood readily without further description.

Having thus described my invention, l

claim:

1. The combination of a bed adapted to support a lithograph stone; a frame positioned above said bed and adjustable relatively thereto; a framework hinged to said member and normally positionedabove said stone; a backer plate on said framework no-rmally free from contact wit-h said stone, one end of said backer plate having a yielding connection; means reciprocable lengthwise of said framework and coacting with said backer plate to create an impression from said stone; and means for adjusting the position ofthe free end of said framework relatively to said bed.

2. The combination of a bed adapted to support a lithograph stone; a member removably positioned upon said bed and extending upwardly therefrom; a frame adjustable vertically upon sa-id member and normally positioned above said stone; a framework hinged to said frame; a backer plate on said framework above and normally free from contact with said stone; means reciprocable lengthwise of said framework and coacting with said backer plate to create an impression upon a sheet disposed upon said stone; and means for adjusting the position of said frame relatively to said bed.

3. The combination of a bed adapted to support a lithograph stone; a frame positioned above said bed and adjustable relatively thereto; a framework hinged to said frame and normally positioned above said stone; a backcr plate on said framework above and normally free from contact with said stone; means reciprocable lengthwise of said framework and coacting with said backer plate to create an impression from said stone; and means for adjusting the position of the free end of said framework relatively to said bed.

1. rThe combination of a bed adapted to support a lithograph stone; a frame positioned above said bed and adjustable relatively thereto; a framework hinged to said frame and normally positioned above said stone; a backer plate on said framework above and normally free from contact with said stone; means reciprocable lengthwise of said framework and coacting with said backer plate to create an impression from said stone; means for locking the outer end of said framework; and means for adjusting the positionv of the free end of saidl framework relatively to said bed.

5. The combination of a bed adapted to support a lithograph stone; a threaded post extending upwardly from said bed; a revoluble nut thereon; a fra-me supported by said nut; a framework hingedy to said member; and impression creating means movable on said framework over the face of said stone.

6. The combination of a bed adapted to support a lithograph stone; a frame supported above said bed and adjustable relatively thereto; a framework hinged to said frame; a hook adjustably mounted in the free end of said framework; locking means on the end of said bed engaging said hook; and impression creating means movable on said framework over the face of said stone.

7. The combination of a bed adapted to support a lithograph stone; a frame supported above said bed; a framework hinged to said frame; a. hook in the free end of said framework; an impression bar movable on said framework over the face of said stone; and means on the end of said bed for creating a downward pull on said hook.

8. The combination of a bedV adapted to supporta lithograph stone; a frame positioned above said bed; a framework hinged to said frame and normally positioned above said stone and parallel thereto; a. reciprocating carriage on said framework; an impression bar carried by said carriage and adapted to be moved over the face of said stone; and manually actuated mechanism on the end of said bed for moving said framework toward saidy bed.

9. The combination of a bed adapted to support a lithograph stone; a frame positioned above said bed; a framework hinged to said frame and normally positioned above 

